/*===========================================================================*\
*                                                                           *
*                               OpenMesh                                    *
*      Copyright (C) 2001-2005 by Computer Graphics Group, RWTH Aachen      *
*                           www.openmesh.org                                *
*                                                                           *
*---------------------------------------------------------------------------* 
*                                                                           *
*                                License                                    *
*                                                                           *
*  This library is free software; you can redistribute it and/or modify it  *
*  under the terms of the GNU Library General Public License as published   *
*  by the Free Software Foundation, version 2.                              *
*                                                                           *
*  This library is distributed in the hope that it will be useful, but      *
*  WITHOUT ANY WARRANTY; without even the implied warranty of               *
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        *
*  Library General Public License for more details.                         *
*                                                                           *
*  You should have received a copy of the GNU Library General Public        *
*  License along with this library; if not, write to the Free Software      *
*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                *
*                                                                           *
\*===========================================================================*/

//=============================================================================
//
//  CLASS Plane3D
//
//=============================================================================


#ifndef OPENMESH_PLANE3D_HH
#define OPENMESH_PLANE3D_HH


//== INCLUDES =================================================================

#include <Core/Math/VectorT.hh>


//== FORWARDDECLARATIONS ======================================================

//== NAMESPACES ===============================================================

namespace OpenMesh {
	namespace VDPM {

		//== CLASS DEFINITION =========================================================


		/** \class Plane3d Plane3d.hh <Tools/VDPM/Plane3d.hh>

		ax + by + cz + d = 0
		*/


		class Plane3d
		{
		public:

			typedef OpenMesh::Vec3f         vector_type;
			typedef vector_type::value_type value_type;

		public:

			Plane3d()
				: d_(0)
			{ }

			Plane3d(const vector_type &_dir, const vector_type &_pnt)
				: n_(_dir), d_(0)
			{ 
				n_.normalize();
				d_ = -dot(n_,_pnt); 
			}

			value_type signed_distance(const OpenMesh::Vec3f &_p)
			{
				return  dot(n_ , _p) + d_;
			}

			// back compatibility
			value_type singed_distance(const OpenMesh::Vec3f &point)
			{ return signed_distance( point ); }

		public:

			vector_type n_;
			value_type  d_;

		};

		//=============================================================================
	} // namespace VDPM
} // namespace OpenMesh
//=============================================================================
#endif // OPENMESH_PLANE3D_HH defined
//=============================================================================
